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i'm Linux Newby and im using Ubuntu 12.04 (64bit) on Acer timeline 3820tg. Everything worked fine until I unplugged the power adaptor. Well In Batterymode everything was still okay, but when i tried to reboot, i get the error: “The system is running in low-graphics mode”. And i can't reboot even with the power supply. Now I've tried all of these proposes: How to fix "The system is running in low-graphics mode" error? None worked. I think the problem is my graphics. My acer has two graphic cards: - AMD Mobility Radeon HD 5650 - Intel HD

In Win7, it changes to the Intel when I am on battery and switches back to when power supply is plugged in.

So what can I do? I now that this switching wont be able under ubuntu, but how can i get my ubuntu back at all?

Thank you!

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Okay i kinda solved it. In my Bios I changed the entry "Graphic Card" from "switchable" to "discrete" and i could boot again :) But how can I decide which Graphic card i want to use in my bios? –  user147329 Apr 6 '13 at 18:40

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